OZMO™ Mopping Technology allows the OZMO 920 to vacuum and mop simultaneously and uses specialized water pumps, sensors, and a mopping pad to ensure that your hard floors get a thorough clean. Control the water flow to the mopping pad with the ECOVACS app to add the perfect amount of water to your mop. Carpet detection automatically boosts suction power when vacuuming carpets and avoids carpets when mopping. Multi-Floor Mapping. The OZMO 920 can save up to 3 different maps, which is perfect for multi-level homes and multiple cleaning spaces, and automatically recognizes the saved area it will be cleaning. Recharge & Resume. The OZMO 920 returns to its charging dock automatically when low on battery and will resume cleaning where it left off once charged. Easy to use. You can start, stop, or charge the OZMO 920 with Amazon Alexa, Google Assistant, or from your mobile device using the ECOVACS Home app. Star Safety Technology: your DEEBOT moves safely in your home using cliff sensors to clean around stairs without the risk of falling off. Average battery run time: 110 minutes. Dust bin capacity: 430mL. Water tank capacity: 240mL.